Intrinsic PEEP and its Determination

  • W. A. Zin
  • V. R. Cagido


Facing a patient who presents with respiratory functional impairment, the physician is left with the task of conducting tests to determine whether there is a mechanical component to the illness. One abnormality that must be considered is intrinsic positive end-expiratory pressure (PEEPi). PEEPi [1,2] is the difference between alveolar pressure and the pressure at the airway opening at the end of expiration. It has also been termed auto-PEEP [3], occult PEEP [3], inadvertent PEEP [4], endogenous PEEP, and internal PEEP. Although not difficult to accomplish, precise determination of PEEPi and subsequent interpretation of the results demand a thorough awareness of the pertinent theoretical and methodological concepts [5,6].


Functional Residual Capacity Inspiratory Effort Inspiratory Capacity Alveolar Pressure Dynamic Hyperinflation 
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Copyright information

© Springer 2008

Authors and Affiliations

  • W. A. Zin
    • 1
  • V. R. Cagido
    • 1
  1. 1.Laboratory of Respiration Physiology, Carlos Chagas Filho Institute of BiophysicsFederal University of Rio de JaneiroRio de JaneiroBrazil

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